instance, would determine the value of the shares. but that is a long way off. also along with all that is finding a way to make the shares viable for bigger businesses like this family-run excavation company. a few customers are able or willing to exchange large amounts of cash for the shares, and the firm's suppliers cannot take them, either. >> i find myself looking for places to spend them on things we needed. with our bills being so high, people don't have that amount of cash around anyway. so, we did not end up getting a lot of payments. >> the whole point of the shares is to keep money circulating within the community. but that is the weakness, too. anything bought from outside must be purchased in dollars. most of these bicycles, for instance, are made in china and the chinese don't take the shares, at least not yet. bbc news, massachusetts.